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authorLuis R. Rodriguez <lrodriguez@atheros.com>2009-07-31 04:38:09 +0400
committerJohn W. Linville <linville@tuxdriver.com>2009-08-05 00:44:19 +0400
commit8b19e6ca3bac7e04e93fb73f561d670e77c5fae6 (patch)
tree50a1487febe99b670aab253c4eebee2b8b3c8268 /net
parentabc7381bcca6ce9dc101f112a13e14957bfbda7e (diff)
downloadlinux-8b19e6ca3bac7e04e93fb73f561d670e77c5fae6.tar.xz
cfg80211: enable country IE support to all cfg80211 drivers
Since the bss is always set now once we are connected, if the bss has its own information element we refer to it and pass that instead of relying on mac80211's parsing. Now all cfg80211 drivers get country IE support, automatically and we reduce the call overhead that we had on mac80211 which called this upon every beacon and instead now call this only upon a successfull connection by a STA on cfg80211. Acked-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
-rw-r--r--net/mac80211/mlme.c6
-rw-r--r--net/wireless/reg.c6
-rw-r--r--net/wireless/reg.h15
-rw-r--r--net/wireless/sme.c16
4 files changed, 33 insertions, 10 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index 2d5edfda867a..c9e4091cd2bb 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1845,12 +1845,8 @@ static void ieee80211_rx_mgmt_beacon(struct ieee80211_sub_if_data *sdata,
bssid, ap_ht_cap_flags);
}
+ /* Note: country IE parsing is done for us by cfg80211 */
if (elems.country_elem) {
- /* Note we are only reviewing this on beacons
- * for the BSSID we are associated to */
- regulatory_hint_11d(local->hw.wiphy,
- elems.country_elem, elems.country_elem_len);
-
/* TODO: IBSS also needs this */
if (elems.pwr_constr_elem)
ieee80211_handle_pwr_constr(sdata,
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 6ab56f098de1..b3ac0aace0e5 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -1822,10 +1822,7 @@ void regulatory_hint_11d(struct wiphy *wiphy,
env = ENVIRON_OUTDOOR;
/*
- * We will run this for *every* beacon processed for the BSSID, so
- * we optimize an early check to exit out early if we don't have to
- * do anything
- *
+ * We will run this only upon a successful connection on cfg80211.
* We leave conflict resolution to the workqueue, where can hold
* cfg80211_mutex.
*/
@@ -1878,7 +1875,6 @@ free_rd_out:
out:
mutex_unlock(&reg_mutex);
}
-EXPORT_SYMBOL(regulatory_hint_11d);
static bool freq_is_chan_12_13_14(u16 freq)
{
diff --git a/net/wireless/reg.h b/net/wireless/reg.h
index e37829a49dc4..662a9dad76d5 100644
--- a/net/wireless/reg.h
+++ b/net/wireless/reg.h
@@ -36,4 +36,19 @@ int regulatory_hint_found_beacon(struct wiphy *wiphy,
struct ieee80211_channel *beacon_chan,
gfp_t gfp);
+/**
+ * regulatory_hint_11d - hints a country IE as a regulatory domain
+ * @wiphy: the wireless device giving the hint (used only for reporting
+ * conflicts)
+ * @country_ie: pointer to the country IE
+ * @country_ie_len: length of the country IE
+ *
+ * We will intersect the rd with the what CRDA tells us should apply
+ * for the alpha2 this country IE belongs to, this prevents APs from
+ * sending us incorrect or outdated information against a country.
+ */
+void regulatory_hint_11d(struct wiphy *wiphy,
+ u8 *country_ie,
+ u8 country_ie_len);
+
#endif /* __NET_WIRELESS_REG_H */
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index 3728d2b88b25..af91192eedf5 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -13,6 +13,7 @@
#include <net/cfg80211.h>
#include <net/rtnetlink.h>
#include "nl80211.h"
+#include "reg.h"
struct cfg80211_conn {
struct cfg80211_connect_params params;
@@ -320,6 +321,7 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
struct cfg80211_bss *bss)
{
struct wireless_dev *wdev = dev->ieee80211_ptr;
+ u8 *country_ie;
#ifdef CONFIG_WIRELESS_EXT
union iwreq_data wrqu;
#endif
@@ -401,6 +403,20 @@ void __cfg80211_connect_result(struct net_device *dev, const u8 *bssid,
wdev->sme_state = CFG80211_SME_CONNECTED;
cfg80211_upload_connect_keys(wdev);
+
+ country_ie = (u8 *) ieee80211_bss_get_ie(bss, WLAN_EID_COUNTRY);
+
+ if (!country_ie)
+ return;
+
+ /*
+ * ieee80211_bss_get_ie() ensures we can access:
+ * - country_ie + 2, the start of the country ie data, and
+ * - and country_ie[1] which is the IE length
+ */
+ regulatory_hint_11d(wdev->wiphy,
+ country_ie + 2,
+ country_ie[1]);
}
void cfg80211_connect_result(struct net_device *dev, const u8 *bssid,